Flights from Philadelphia to San Sebastian

Cheapest flights from Philadelphia

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 3 - Sat, Oct 4

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$216 Roundtrip, just found

$216

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, Oct 3 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Sat, Oct 4, priced at $216 just found

Tue, Sep 30 - Fri, Oct 3

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$218 Roundtrip, just found

$218

Roundtrip

just found

Select Frontier Airlines flight, departing Tue, Sep 30 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Fri, Oct 3, priced at $218 just found

Mon, Aug 11 - Thu, Aug 14

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$220 Roundtrip, found 21 hours ago

$220

Roundtrip

found 21 hours ago

Select Spirit Airlines flight, departing Mon, Aug 11 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Thu, Aug 14, priced at $220 found 21 hours ago

Fri, Oct 3 - Mon, Oct 6

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$221 Roundtrip, just found

$221

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, Oct 3 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Mon, Oct 6, priced at $221 just found

Fri, Oct 3 - Mon, Oct 6

TTN

Mercer

SJU

Luis Munoz Marin Intl.

$222 Roundtrip, just found

$222

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, Oct 3 from Mercer to Luis Munoz Marin Intl., returning Mon, Oct 6, priced at $222 just found

Tue, Sep 30 - Sun, Oct 5

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$224 Roundtrip, just found

$224

Roundtrip

just found

Select Frontier Airlines flight, departing Tue, Sep 30 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Sun, Oct 5, priced at $224 just found

Thu, Oct 2 - Fri, Oct 3

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$226 Roundtrip, just found

$226

Roundtrip

just found

Select Frontier Airlines flight, departing Thu, Oct 2 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Fri, Oct 3, priced at $226 just found

Thu, Oct 2 - Sun, Oct 5

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$227 Roundtrip, just found

$227

Roundtrip

just found

Select Frontier Airlines flight, departing Thu, Oct 2 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Sun, Oct 5, priced at $227 just found

Fri, Oct 3 - Mon, Oct 6

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$228 Roundtrip, just found

$228

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, Oct 3 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Mon, Oct 6, priced at $228 just found

Sat, Aug 9 - Wed, Aug 13

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$230 Roundtrip, found 21 hours ago

$230

Roundtrip

found 21 hours ago

Select Spirit Airlines flight, departing Sat, Aug 9 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Wed, Aug 13, priced at $230 found 21 hours ago

Tue, Sep 30 - Tue, Oct 7

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$231 Roundtrip, just found

$231

Roundtrip

just found

Select Frontier Airlines flight, departing Tue, Sep 30 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Tue, Oct 7, priced at $231 just found

Tue, Jun 24 - Tue, Jul 1

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$234 Roundtrip, found 20 hours ago

$234

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Tue, Jun 24 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Tue, Jul 1, priced at $234 found 20 hours ago

Sat, Oct 4 - Sat, Oct 4

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$236 Roundtrip, just found

$236

Roundtrip

just found

Select Frontier Airlines flight, departing Sat, Oct 4 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Sat, Oct 4, priced at $236 just found

Mon, Jun 30 - Wed, Jul 2

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$238 Roundtrip, found 20 hours ago

$238

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Mon, Jun 30 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Wed, Jul 2, priced at $238 found 20 hours ago

Fri, Oct 3 - Mon, Oct 6

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$245 Roundtrip, just found

$245

Roundtrip

just found

Select Delta flight, departing Fri, Oct 3 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Mon, Oct 6, priced at $245 just found

Fri, Jul 4 - Thu, Jul 10

PHL

Philadelphia Intl.

BQN

Rafael Hernandez

$258 Roundtrip, found 6 days ago

$258

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jul 4 from Philadelphia Intl. to Rafael Hernandez, returning Thu, Jul 10, priced at $258 found 6 days ago

Thu, Jul 3 - Thu, Jul 10

TTN

Mercer

BQN

Rafael Hernandez

$298 Roundtrip, found 6 days ago

$298

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jul 3 from Mercer to Rafael Hernandez, returning Thu, Jul 10, priced at $298 found 6 days ago

Tue, Nov 11 - Wed, Nov 19

ABE

Lehigh Valley Intl.

SJU

Luis Munoz Marin Intl.

$305 Roundtrip, found 5 days ago

$305

Roundtrip

found 5 days ago

Select American Airlines flight, departing Tue, Nov 11 from Lehigh Valley Intl. to Luis Munoz Marin Intl., returning Wed, Nov 19, priced at $305 found 5 days ago

Tue, Nov 18 - Wed, Dec 3

PHL

Philadelphia Intl.

SJU

Luis Munoz Marin Intl.

$310 Roundtrip, found 4 days ago

$310

Roundtrip

found 4 days ago

Select JetBlue Airways flight, departing Tue, Nov 18 from Philadelphia Intl. to Luis Munoz Marin Intl., returning Wed, Dec 3, priced at $310 found 4 days ago

Fri, Nov 7 - Thu, Nov 13

ABE

Lehigh Valley Intl.

SJU

Luis Munoz Marin Intl.

$352 Roundtrip, found 5 days ago

$352

Roundtrip

found 5 days ago

Select United flight, departing Fri, Nov 7 from Lehigh Valley Intl. to Luis Munoz Marin Intl., returning Thu, Nov 13, priced at $352 found 5 days ago